wireguard-linux/drivers/iio/imu, branch jd/unified-crypt-queue

iio: imu: adis_buffer: Use new structure for SPI transfer delays

2020-03-08T17:28:45Z

In a recent change to the SPI subsystem [1], a new `delay` struct was added to replace the `delay_usecs`. This change replaces the current `delay_usecs` with `delay` for this driver. The `spi_transfer_delay_exec()` function [in the SPI framework] makes sure that both `delay_usecs` & `delay` are used (in this order to preserve backwards compatibility). [1] commit bebcfd272df6 ("spi: introduce `delay` field for `spi_transfer` + spi_transfer_delay_exec()") Signed-off-by: Sergiu Cuciurean Signed-off-by: Jonathan Cameron

iio: imu: inv_mpu6050: temperature only work with accel/gyro

2020-03-08T17:28:40Z

Temperature sensor works correctly only when accel and/or gyro is turned on. Prevent polling value if they are not running. Anyway it doesn't make sense to use it without sensor engines on. Signed-off-by: Jean-Baptiste Maneyrol Signed-off-by: Jonathan Cameron

iio: imu: inv_mpu6050: use runtime pm with autosuspend

2020-03-08T17:28:39Z

Use runtime power management for handling chip power and sensor engines on/off. Simplifies things a lot since pm runtime already has reference counter. Usage of autosuspend reduces the number of power on/off. This makes polling interface now usable to get data at low frequency. Signed-off-by: Jean-Baptiste Maneyrol Signed-off-by: Jonathan Cameron

iio: imu: inv_mpu6050: dynamic sampling rate change

2020-03-08T17:28:39Z

Sampling rate can be changed while the chip is running. It can be useful thus do not prevent it. Signed-off-by: Jean-Baptiste Maneyrol Signed-off-by: Jonathan Cameron

iio: imu: inv_mpu6050: factorize fifo enable/disable

2020-03-08T17:28:39Z

Rework fifo enable/disable in a separate function. Signed-off-by: Jean-Baptiste Maneyrol Signed-off-by: Jonathan Cameron

iio: imu: inv_mpu6050: fix data polling interface

2020-03-08T17:28:38Z

When reading data with the polling interface, we need to wait at 1 sampling period to have a sample. For gyroscope and magnetometer, we need to wait for 2 periods before having a correct sample. Not suitable for stable or backporting. Signed-off-by: Jean-Baptiste Maneyrol Signed-off-by: Jonathan Cameron

iio: imu: inv_mpu6050: rewrite power and engine management

2020-03-08T17:28:38Z

Rewrite clock management to use automatic clock switching present since MPU6500. Sensors engine management can now turn on or off a batch of sensors which simplifies usage a lot. Temperature sensor is now turned on/off depending on usage. Signed-off-by: Jean-Baptiste Maneyrol Signed-off-by: Jonathan Cameron

iio: imu: inv_mpu6050: reduce sleep time when turning regulators on

2020-03-08T17:28:38Z

Turning vdd regulator on requires a consequent sleep for the chip to power on correctly. Turning vddio regulator is much faster. Signed-off-by: Jean-Baptiste Maneyrol Signed-off-by: Jonathan Cameron

iio: imu: inv_mpu6050: add all signal path resets at init

2020-03-08T17:28:37Z

Old chips using spi require for a full reset to manually reset all signal path. This does not harm when using i2c so do it inconditionally. Exclude i2c only chips. Signed-off-by: Jean-Baptiste Maneyrol Signed-off-by: Jonathan Cameron

iio: imu: inv_mpu6050: early init of chip_config for use at setup

2020-03-08T17:28:37Z

Init chip_config early and use its values for initial setup. More coherent, prevent possible mistakes. Signed-off-by: Jean-Baptiste Maneyrol Signed-off-by: Jonathan Cameron